Motorola's incredibly capable MotoActv fitness device can tackle just about any fitness task--such as tracking workouts via GPS and connecting to headsets via Bluetooth--and it serves as a very tiny digital music player. Yet, if you're looking for a simple tool to measure daily activity and provide holistic advice on how to shed some pounds, this training tool isn't for you.

commentary New gadgets like the Xperia Z Ultra smartphone and the SmartWatch 2 harken back to the era when consumers considered Sony synonymous with innovation. Now let's see if that translates into something resembling volume sales.